y= (x-2)/(x^2-x+1)
Find y` and y``
for the problem i get to
y`=(-x^2+4x-1)/(x^2-x+1)^2 by u/v method but the answer of this derivative problem is (Given in the book)
-3(x^2-3x+1)/(x^2-x+1)^3
How can i Get to this form ?
Thanks
If you put x=1 into both the equations you get two different answers so they're not the same.
The only way to get as the denominator is to differentiate again. I thought this would be f''(x).
However, I began to differentiate again (using the quotient rule, it's similar to before) and I got a cubic appearing on top (hence this can't be f''(x)).
Try and differentiate f'(x) again and see what you get. I'm pretty sure i'm doing it correctly.